Production method for a figure-of-eight-shaped laminated coil

Abstract

There is provided a production method for a laminated coil, the production method including: a process of producing a coil part of one axis by stacking a flat coil in an axial direction, a process of bending the flat coil of a connection portion in an extended state thereof in a length direction to allow for the division of a first coil part and a second coil part, wherein the connection portion connecting two coil parts is produced by bending the flat coil of the connection portion, and a process of finally spreading the bent connection portion, such that the first coil part and the second coil part may be disposed to be parallel in the same direction on the same plane.

Claims

1. A production method for a laminated coil, the production method comprising: bending a single flat coil from an initiation point, spaced apart from a first end of the flat coil, in a stacking direction to form a first coil part having the flat coil stacked in an angular tube shape of the stacking direction; forming a connection portion in the stacking direction of the first coil part by bending the flat coil of the first coil part; bending the flat coil of the connection portion in an extended state of the connection portion, in a second stacking direction to form a second coil part stacked in another annular tube shape along the second stacking direction such that the second stacking direction of the second coil part is non-parallel to the stacking direction of the first coil part; and separating the first coil part and the second coil part at the connection portion that has been bent such that the first coil part and the second coil part are disposed on the same plane.

2. The production method of claim 1, wherein in the forming of the connection portion, the flat coil is bent in a direction perpendicular to the stacking direction to form a first bent portion and a second bent portion such that the first bent portion of the connection portion is aligned with the stacking direction of the first coil part.

3. The production method of claim 1, wherein in the forming of the connection portion, the flat coil is bent in a direction perpendicular to the stacking direction such that a first bent portion of the connection portion is aligned with the stacking direction of the first coil part, and a second bent portion of the connection portion is re-bent in the second stacking direction.

4. The production method of claim 1, wherein the connection portion is bent such that the second stacking direction of the second coil part is perpendicular to the stacking direction of the first coil part.

Description

DESCRIPTION OF DRAWINGS

(1) FIG. 1 is a view illustrating a process of preparing a flat coil before the bending thereof.

(2) FIG. 1b is a view illustrating a process of bending the flat coil from an end thereof in one direction.

(3) FIG. 1c is a view illustrating a process of forming a first coil part having the flat coil stacked in an angular tube shape by the process.

(4) FIG. 1d is a view illustrating a process of forming a first bent portion by bending the flat coil of the first coil part.

(5) FIG. 1e is a view illustrating a first example of a process of forming a second coil part by stacking the flat coil in an angular tube shape.

(6) FIG. 1f is a view illustrating a process of forming a second bent portion by re-bending the first bent portion of a connection portion, bent once.

(7) FIG. 1g is a view illustrating a second example of a process of forming the second coil part by stacking the flat coil in an angular tube shape.

(8) FIG. 2 is a view illustrating a process of spreading the bent connection portion such that the first coil part and the second coil part that are finally formed are disposed in parallel in the same direction on the same plane.

(9) FIG. 3 is a view illustrating a laminated coil shown in FIG. 2 when viewed from above.

(10) [Representative Figure]

(11) FIG. 3

BEST MODE

(12) Hereinafter, the present invention relates to a production method for a laminated coil. Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

(13) FIG. 1a is a view illustrating a process of preparing a flat coil before the bending thereof. FIG. 1b is a view illustrating a process of bending the flat coil from an end thereof in one direction. FIG. 1c is a view illustrating a process of forming a first coil part having the flat coil stacked in an angular tube shape by the process. FIG. 1d is a view illustrating a process of forming a first bent portion by bending the flat coil of the first coil part. FIG. 1e is a view illustrating a first example of a process of forming a second coil part by stacking the flat coil in an angular tube shape. FIG. 1f is a view illustrating a process of forming a second bent portion by re-bending the first bent portion of a connection portion, bent once. FIG. 1g is a view illustrating a second example of a process of forming the second coil part by stacking the flat coil in an angular tube shape.

(14) FIG. 2 is a view illustrating a process of spreading the bent connection portion such that the first coil part and the second coil part that are finally formed are disposed in parallel in the same direction on the same plane. FIG. 3 is a view illustrating a laminated coil shown in FIG. 2 when viewed from above.

(15) In a first embodiment, as illustrated in FIG. 1a, a flat coil 5 having a first end 10 formed therein is prepared. As illustrated in FIG. 1b, the flat coil may be bent in an axial direction from an initiation point 20 thereof spaced apart from the first end 10 thereof. In this case, the term bending refers to forming a coil by bending a flat coil and is known as edgewise winding. As illustrated in FIG. 1C, the flat coil is bent in the axial direction to form a first coil part 30 having the flat coil stacked in an angular tube shape.

(16) As illustrated in FIG. 1d, in the correspondingly formed first coil part 30, the flat coil is bent from a first bent portion 40 to form a connection portion 35. As illustrated in FIG. 1e, the flat coil of the connection portion 35 is bent in an extended state thereof in a length direction to separate the first coil part 30 and a second coil part 60, and then the flat coil is stacked in an angular tube shape to form the second coil part 60.

(17) An end 90 of the second coil part 60 may be formed in a position spaced apart from a termination point 70 of the second coil part 60 in which the stacking of the flat coil is terminated, by a determined distance.

(18) In a second embodiment, the processes of FIGS. 1a through 1d are the same as those of the first embodiment described above, and as illustrated in FIG. 1f, the connection portion is re-bent in a position thereof spaced apart from the first bent portion 40 in the length direction of the flat coil to form a second bent portion 50. As illustrated in FIG. 1g, the flat coil is bent to form the second coil part 60 having the flat coil stacked in the angular tube shape.

(19) The end 80 of the second coil part 60 may be formed in a position spaced apart from the termination point 70 of the second coil part 60 in which the stacking of the flat coil is terminated, by a determined distance.

(20) In the coil produced according to the first example and the second example described above, the bent connection portion 35 may spread out such that the first coil part 30 and the second coil part 60 are disposed in parallel in the same direction on the same plane, as illustrated in FIG. 2, to form a finished product.

DESCRIPTION OF REFERENCE NUMERALS

(21) 5: flat coil

(22) 10: first end

(23) 20: initiation point

(24) 30: first coil part

(25) 35: connection portion

(26) 40: first bent portion

(27) 50: second bent portion

(28) 60: second coil part

(29) 70: termination point

(30) 80: second end